Fire extinguisher



Feb. 17, BITTNER FIRE EXTINGUISHER Fi led Jan. 4, 1957 INVENTOR..FRHDWILL BITTNER United States Patent .6

2,873,806 1 FIRE EXTINGUISHER FredwillBittner, Los Angeles, Calif.Application January 4, 1957, Serial No. 63 2 ,5 66 2 Claims. 01. 169-36)This invention relates to. a fire extinguisher and is more particularlyconcerned with a combination dry chemical and concussion fireextinguisher.

In many situations, fires can be momentarily arrested or subdued by aconcussion and/or by the application or covering of the fire with a drypowder-like chemical, as for instance, sodium bicarbonate.

Ordinarily, in fires of any consequence, it is not possible to get closeenough to the fire to suitably dust or cast a dry chemical, such assodium bicarbonate, or it in a manner to achieve any suitable oradvantageous results.

An object of the present invention is to provide a fire extinguisherconstruction adapted. to distribute and dust a large area with a drypowder fire extinguishing chemical.

Another object of the present invention is to provide a fireextinguisher construction of the general character referred to that canbe cast into or above conflagration to advantageously cover andextinguish the fire.

A further object of my invention is to provide an expendable combinationconcussion and dry chemical fire extinguisher construction which is easyand economical 1 of manufacture, which is neat, compact and easyto storeand handle, and which is both effective and dependable in operation.

A feature of the present invention is to provide a fire extinguisherhaving afrangible container filled with a suitable dry powdered fireextinguishing chemical and an explosive charge or bomb within thecontainer and adapted, when ignited, to explode the container anddistribute the chemical.

Another feature of my invention is to provide a casting cord with ahandle on the fire extinguisher construction and adapted to facilitateslinging or casting the extinguisher into a fire. r i

The various objects and features of my invention will be fullyunderstood from the following detailed description of a typicalpreferred form and application of my invention, throughout whichdescription reference is made to the accompanying drawings, in which:

Fig.1 is a perspective view of the fire extinguisher that I provide andshowing it in a closed, sealed condition.

Fig. 2 is a perspective view of the fire extinguisher that I provide andshowing it in an opener extended condition ready for use.

Fig. 3 is a perspective view showing a man casting the fire extinguisheras provided by the present invention.

Fig. 4 is an enlarged detailed sectional view of my fire extinguisherconstruction and taken as indicated by line 4-4 on Fig. 1.

Fig. 5 is an end elevational view taken as indicate by line 5-5 on Fig.4.

The fire extinguisher provided by the present invention and illustratedthroughout the drawings, includes, generally, an elongate cylindricalbody A, a pair of longitudinally spaced partitions B and C within thebody and defining a central chamber X and longitudinally ontwardlyopening end chambers Y and Z, and end closures D and E engageable in theends of the body and normally closing the chambers Y andZ.

within the chamber Y.

The body A is a simple, elongate tube of frangible material, such aspaper, and is characterized by straight, cylindrical inner and outerwalls 10 and 11 and flat, radially disposed ends 12 and 13.

The longitudinally spaced partitions B and C are like,

oppositely disposed cup-shaped members, having fiat,

radially disposed bottoms 14 and longitudinally disposed annular flanges15. The flanges 15 slidably engage the inner wall 10 of the body A.

The cup-shaped partitions B and C areengaged in the related ends of thebody A so that they open outwardly and are engaged in the body so thatthe edges of the flanges 15 are spaced inwardly of the ends 12 and 13 ofthe body and establish annular shoulders 16 adapted to be engaged by andto stop the closures D and 'E, as will hereinafter be described.

In practice, the partitions B and C are secured in fixed position in thebody as by the application of a suitable cement which establishes a sealbetween the partition and the body, and by a plurality ofcircumferentially spaced staples 17. v

With the above relationship of parts, it will be apparent that thepartitions B and C cooperate with the body A to define the centralchamber X in which the fire extinguishing chemical F and the bomb G arecontained and the longitudinally outwardly opening end chambers Y and Zin which the casting cord I and the fuse H are normally housed.

The fire extinguishing chemical F is a dry powdered chemical, such assodium bicarbonate and is packed in the chamber X.

The bomb G is shown as a simple elongate cylindrical member of limiteddiameter and longitudinal extent and is arranged in the chamber X of thebody A to occur along the central longitudinal axis of the body and inspaced relationship between the partitions B and C.

In practice, the bomb G can be in the nature of a large fire-cracker andis provided with an elongate fuse H which extends through a suitableport or aperture 18 in the partition 14 and so that the free end of thefuse occurs within the chamber Z.

In assemblying or building the fire extinguisher that I provide, thepartition B is secured in the body A, then a portion of the chemical Fis inserted into the chamber Y and is packed in the end of the chamberadjacent the partition B, next the bomb G is positioned in the chamber;and then the remainder of the chemical F is inserted and packed in thechamber to occur around and to cover the bomb. After the chemical andthe bomb are packed and positioned in the body in the manner set forthabove, the fuse H of the bomb G is engaged through the aperture 18 inthe partition C and the partition is engaged in the body, against thechemical F packed therein, and is fixed in position.

The closure E for the chamber Z and adapted to normally close thechamber and protect the fuse H housed therein, is a flat, disc-shapedpaper or fiber board member and is adapted to be press fitted into thechamber Z from the outer end thereof, to establish bearing engagementagainst the shoulder-16 in the chamber established 3 by the flange ofthe partition C. The closure E is provided with a pull tab 19 at oneside thereof, which tab projects longitudinally outwardly from the end13 of the body and is adapted tobe engaged. between the fingers toremove the closure and thereby expose thefuse H' for the bomb G. i

The closure D for the chamber Y and adapted to, normally close thechamber and house the casting cord I is similar to the closure E for thechamber Z, that it is a flat, disc-shaped paper or fiber board memberadapted to be press fitted into the chamber Y from the, outer endthereof, to. establishbearing engagementagainst, the shoulder 16 in thechamber, established by the partition B. The closure D, like the closureE, is providedwith a pull tab 20v at one side thereof to permit easyremovable of the closure from the. body when the. ex.- tinguishflr isbeing readied for use.

The casting cord I fixed to and extending between the partition B andclosure D is a simple cord or string of suitable size and; strength. Oneend of the cordv isenin the chamber Y and the closure D becomes. asuitable handle, at the free end, of the cord; By. engaging the closureD} in the hand after it is removed from the body A, the operator orpersonv putting. the extinguisher to use can. swing or cast theextinguisher into a tire, in the manner indicated by the arrows in Fig.3 of the drawings.

In the preferred carrying out of the invention and to prevent the knot22 from tearing the partition B or from being drawn through theaperture- 21in the partition, I provide an apertured back-up. plate orwasher 25 onthe inner side of the partition and through which the cord Iis engaged. In order that the knot 24 does not tear or pull out ofengagement from the closure D, I provide an apertured back-up plate- 26on the outer side of theclosure D and through which the cord Iisengaged; In practice, it is preferred that the back-up plate 26related tothe closure D, be cemented to the closure so that it will notbecome displaced. plate 26 be elongate in form and so that the portionsofthe closure D occuring at the opposite side edges thereof can beeasily and conveniently bent or folded over the side edges of the platein the manner'illustrated in Fig. 2 of the drawings, and so as to form acomfortable and easily gripped handle, by whieh the extinguisher canbehurled or cast.

In use, if it is desired to explode the extinguisher above the firewhich is to put out, the fuse H is lit andafter a predetermined lengthof time or count, the extinguisher is cast into the air above the fire.ignited and the extinguisher explodes the concussion'dampens the fireand permits thedry chemical to drop or settle in an efiicient andeffective manner.

In cases where it is not desired to explode theextinguisher in the airand where the fire is very dense, it is only necessary to throw or castthe extinguisher into the tire, whereupon the fuse will belit and theextinguisher will explode in the desired manner.

It is also preferred that the When the bomb G is From the foregoing, itwill be apparent that I have nomical of manufacture and which is botheffective and dependable in operation.

Having described only a typical preferred form and application of myinvention, I do not wish to be limited or restricted to the specificdetails herein set forth, but wish to reserve to myself any variationsof modifications that may appear tothose skilled. in. the. art and fallwithin the scope of the following claims.

Having describednnyinventiomll claim:

1. A fire extinguisher of the, character referred to including anelongate tubular body of frangible material, a pair of longitudinallyspaced oppositely disposed and outwardly opening cup-shaped partitionsin the body and defining a closed central chamber and end chambers,closures releasably engaged in the ends of the body and closing the endchambers, a bomb within the central chamber, a, charge. of powdered fireextinguishing chemical within. the chamber and packed about the bomb, afuse extending from the bomb through one of the partitions.-. tonormally.- occur within the end chamber related thereto, an elongatecord fixed toand extending between the other partition and the closurerelated thereto and adapted to normally occur within the end chamberdefined. thereby, said: closure related to the cord adapted to serve asa handle when the closure is removed and tofacilitate slinging andcasting the extinguisher into a fire, said closure related to thechamber in whichthe fuse is housed being removable to provide access tothe fuse, the bomb being adapted, when ignited, to explode the bodyanddistribute the chemical.

2: A fire extinguisher of the character referred to including anelongate tubular body of frangible material, a pair oflongitudinallyspaced oppositely disposed and outwardly opening cup-shaped partitionsof frangible material engaged in the body in fixed position and defininga closed central chamber and end chambers, disc-shaped closuresreleasably engaged in the ends of the body and closing the endchambers,a pull tab on the closures and accessible at the exterior of theextinguisher and adapted to facilitate removal of the closures, aconcussion bomb withinthe central chamber, a charge of powdered sodium;bicarbonate within the chamber andpackedaboutthe bomb; afuse extendingfrom the bomb through one of the partitions to normally occur Within theend chamber related thereto, an elongate cord fixed to and extend ingbetween the other partition and the closure related thereto and adaptedto normally occur within the end chamber defined thereby, said closurerelated to the cord; adapted to serve as a handle when the closure isremoved and to facilitate slinging and casting theextinguisher into afire, said closure related to the chamber in which the fuse is housedbeing, removable to provide access to the, fuse, the bomb being adapted,when ignited, to explode the body, snub the fire and distribute thesodium bicarbonate over the fire.

References Cited in the file of this patent UNITED STATES, PATENTS798,623 Poole et al. Sept. 5, 1905 832,269 Myers Oct. 2, 1906 883,856Bowman Apr. 7, 1908. 1,482,522 Morriss- Feb. 5, 1924 2,074,648 HaimannMar; 23, 1937 2,328,491 Puchner Aug. 31, 1943 2,483,310 Baker et alSept. 27, 1949

